Concrete-ship mold.



S. GILETTL CONCRETE SHIPMOLD.

APPLICATION HLED JULY 9. 1913.

1 ,297, 1 43 Patented Mar. 11, 1919.

3 SHEETS-SHEET I.

Ifli/Lnta T Seconda Giledi S. GILETH.

CONCRETE SHIP MOLD.

APPLICATION HLED JULY 9, 191a.

Patented Mar. 11, 1919.

3 SHEETSSHEET 2.

S. GILETTI.

CONCRETE SHIP MOLD.

APPLICATION FILED lUL'Y 9.191s.

Patented Mar. 11, 1919.

3 SHEETS-SHEET 3.

Ina/97:1 :02

Secondo G'i lezfi snconno GILETTI, or SAN FRANoisoo, CALIFORNIA.

CONCRETE-SHIP MOLD.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed July 9,1918. Serial No. 244,036. p v I To all whom it may concern:

Be it known that I, SECONDO Grimm, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Concrete-Ship Molds, of which the following is a specification.

This invention relates to a mold for concrete ships, and particularly to a mold for casting a concrete ship such as shown in my co-pending application, entitled, Concrete ship filed July 9, 1918, Serial No. 244,085.

In the construction of a seagoing vessel of reinforced concrete an exterior mold of finished lumber is generally built. The interior surface of this mold must be finished, because the concrete which is poured therein must have a perfectly finished outer surface when finished to offer a minimum of'resistance. Within this shipshape mold the complementary forms or molds are set up, said molds being constructed to permit the formation of reinforcing ribs, girders, and the like. The interior mold represents the greater cost, as a great deal of lumber is employed, and skilled and high priced labor for its construction. The distance between the inner forms and the outer mold determines the thickness of the shell, that is, the sides and the bottom of the ship. The inner forms are generally laid along the bottom of the ship with the metallic'reinforcing rods in place. The concrete isthen poured in be: tween the forms, and the forms are continued up the sides of the vessel as the pouring of the concrete progresses, the concrete being carefully tamped and packed as the work progresses, so as to form a homogeneous dense structure without voids or porous sections through which the water might otherwise enter. The cost of constructing a concrete ship in this manner is comparatively great, due to the fact that the lumber employed can only be used once, and also due to the fact that skilled labor must be employed for the erection of the molds, and the placing of the reinforcing rods. The

time consumed is also comparatively great,"

as it is necessary to build what might be termed one ship within the other to permit the pouring of the concrete.

One of the objects of the present invention is to not only eliminate the necessity of employing high priced and skilled labor, but also to entirely eliminate wooden molds, thereby reducing the time required in the building of the ship, and also the additional oost of lumber. I accomplish this result by providing permanent steel molds which are built in sections, and so arranged that they may be quickly assembled to permit the reinforcing steel to be placed in position, and the concrete to be poured, said molds being capable of being removed and reused the moment the concrete has set. The construction of the molds, the manner of assembling and supporting the same, while the concrete is being poured, will be more fully described'by reference to the accompanying drawings and specification, in which Figure 1 is a transverse section of a concrete ship showing the arrangement of the molds, and the means for supporting the same.

Fig. 2 is an exterior side elevation of the molds.

Fig. 3 is a plan view of the lower portion of the mold. Fig. 4 is a cross section of the truss frame 40.

Fig. 5 is a detail section of the interior side mold plate 43.

Referring to the drawings in detail, and particularly Figs. 1 and 2, A indicates, in general, a concrete ship, which is more fully described in my co-pending application already referred to. This ship is provided with an upper and lower deck such as shown at 2 and 3, and double sides and bottom as shown at 4, 5, 6 and 7, the double sides being formed below the lower deck only. The molds between which the concrete is poured are with relation to a steel frame generally indicated at B.- This frame consists of a plurality of stationary steel columns 8 arranged on eachside of the ship, and spaced apart a suitable distance, each column being supported upon a permanent concrete base as at 9. The upper ends of'the beams are connected by transverse trusses 10, and the several columns 8 are otherwise connected by longitudinally" extending beams or girders 11 upon which are mounted platforms 12 extending from end to end of the ship, said platforms being provided as gangways, upon which men may walk and also as supports for the concrete mixers such as shown at 13, and for the temporary reception of material employed such as steel bars, sand, cement and the like. Arranged below the ship are two or more longitudinally extending concrete piers 14, and formed between said piers and the exterior piers 9, are a series of pits such as shown in 15 and 16. Mounted in the central pit 16 is a main bottom mold l7, and arranged in each pit 15 is a pair of outer bottom molds 18, the outer ends of which are curved as at 19 to permit the outer sides of the bottom section to be rounded as shown at 20. The main bottom mold section 7, together with the exterior sections 18 and 19, are supported by cross beams 21, Which, in turn, are carried by screw jacks 22, all of which may be operated in unison by a worm gear drive generally indicated at 23, power being transmitted to operate the screw jacks from any suitable source of power, or from a motor such as shown at 2 Movable to and away from the sides of the ship are a pair of longitudinally extending exterior molds 25. These molds form an exterior surface for the sides of the ships, and their bottom sections are curved as at 26 to continue the rounded sides of the bottom section. The side molds 25 are supported by frames 26, and these are, in turn, carried by trucks 27, which are movable to and away from the ships sides, as tracks 28 are employed for this purpose, power to move the molds being transmitted by worm driven screw jacks such as shown at 28. The side molds are, in this instance, shown as extending substantially from stem to stern. They, however, only cover the straight side sections of the ship, and separate means must therefore be provided for the purpose of forming the rounded stern and the tapering bow. A separate mold for the stern is shown at 30. This mold is made in two sections as shown, one section being hingedly secured to one of the side molds as at 81, and the other section to the opposite side mold, said molds when swung into position being secured by flanges 32, and bolts passing therethrough. The mold forming the bow is similarly constructed in two sections, one section as 33 being hingedly secured to one of the side molds as at 3 1, while the opposite section is hingedly secured to the opposite side mold; both sections when swung into position being secured together by bolts 35, semi-circular tracks as at 36 being provided to support the molds while in position, and also when swung away from the sides. The mold so far described completes the exterior of the ship. It is, however, necessary to provide interior molds, and to support the same when in posi tion. This is accomplished in the following mann er W hen the exterior molds have all been set up and placed in position, it is next necessary to place a series of truss frames 40 in osition. These frames are handled by a crane 41, and when placed crosswise of the ship, as shown, are bolted to the frames 26. Extending downwardly from the truss frames 4:0 are vertical frames 42, and secured nasty-res to outwardly extending arms carried by the frames T2, are a series of interior side molds These may be secured to the cross arms in any suitable manner, but preferably so that they may be removed whenever desired. Frames -12, and the upper cross arms it also serve a support for the upper and lower deck molds 4:5. These molds may be provided with channels to permit the formation of longitudinal and lateral reinforcing beams, and when set in position permit the concrete to be poured. The double shell, that is, the side walls 4 and 5, together with the bottom sections 6 and 7, are separated by the spaces generally indicated at 50, 51 and These spaces are formed by placing gal vanized iron tanks between the inner and outer molds before the concrete is poured, they, therefore, become permanently embedded in the concrete after it has been poured, and therefore, permit the spaces thus formed to be utilized for the carrying of fuel, water, or any other material desired, the tanks being connected with piping or other suitable means to permit them to be utilized for this purpose. The reinforcing steel, that is, the major portion of the same, is placed in position before the interior molds are set up, and the bars and rods from which the reinforcing material is constructed may, therefore, be utilized to support the tanks in position. The tanks are wired or tied thereto to hold the same in place, thus preventing said tanks from becoming displaced while the concrete is poured.

In actual practice when all molds have been set, and the tanks and reinforcing steel are in place, it is necessary to pour the concrete. This is accomplished, in the presentinstance, by specially constructed concrete mixers generally indicated at 13, which are supported on the platforms 12' These con crete mixers will form the subject matter of a separate application, and are, therefore, not described in detail. It may, however, be stated that a great number of theseconcrete mixers are employed, and that the concrete is delivered to the molds under air pressure, thus forcing it thoroughly into place, and producing a homogeneous, compact mixture without resorting to tamping or other treatment. The concrete when completely poured is allowed to set, and it is then possible to remove the molds by the screw jacks previously described, the interior molds being first removed, secondly the trusses 1%, by which they are supported, thirdly the bow and stern molds, fourthly the side molds, and at last the b0 m molds. The ship thus completed is ready for launching, which is accomplished in the present instance in a novel manner. The main piers 1% form launching ways or supports for the ship. Greased steel plates suci s shown at are placed between the piers and the ships bottom before the bottom molds are raised into place, the uppermost of these steel plates therefore form a portion of the bottom mold, and may, therefore, be removed the minute the ship is launched, as it is not desirable to leave any exposed steel. A sufficient slant is given the piers 14 to permit the Ship to slide off by gravity as said piers serve as the launching ways for the ship. The uppermost steel plates should have a tendency to strip away from the concrete the minute the ship enters the water, but if they do not become removed in this manner, it can readily be seen, any suitable means may be employed for removing the same. The main steel piers or columns 8 supporting the stationary frame work or housing from which the molds are operated may be entirely housed over, or otherwise covered, if desired, thus permitting an even temperature to be maintained, which will prevent the concrete from setting too fast, and also prevent the sun from striking the green concrete when the molds are removed.

The side frames 26 may be provided with platforms upon which the men can work, and they may also serve as temporary supports for the trusses 40, and the interior molds, if desired. Other platforms may, of course, be arranged within the permanent steel frame for the same purpose. All heavy sections such as the side, the bow and the stern molds, together with the bottom molds, are moved to and away from the ship by screw jacks, power operated or otherwise driven, while the trusses 40, together with the interior molds, supported thereby, are

handled directly from the traveling crane 41. It is, therefore, possible to set the molds up in a comparatively short time, and to remove the same when complete, it being one of the objects of the present invention to reduce labor to a minimum, and to permit reuse of the molds as often as desired, this being possible in the present instance, as all molds may be constructed of galvanized heavy sheet iron, which should stand up indefinitely. For the purpose of finishing the exterior sides of the ship, when the molds have been removed, I employ a scaffold such as shown at 70. This scafiold may be provided with a plurality of platforms as at 71, and as it is supported by chains 72, it can be readily seen that it may be lowered or raised away from the sides whenever desired, thus giving the workmen ample opportunity to thoroughly inspect and finish the exterior sides. Other labor saving devices of the same nature can easily be provided in the present instance, as the permanent steel structure permits the attachment and employment of any device, which may be employed to advantage in-the construction of the ship.

Having thus described my invention what I claim and desire to secure by Letters Patcut is l. A concrete ship mold comprising abottom section, a pair of side sections movable to and away from each other, a bow and stern mold section hingedly secured to each side mold section, and means for adjusting the position of the bottom mold vertically.

2. A concrete ship mold comprising abottom section, and a pair of exterior side sections, means for moving said sections to or away from each other, means for raising or lowering the bottom section, an interior mold, means for supporting said mold with relation to the exterior side molds, and means for raising or lowering the interior mold.

3. A concrete ship mold comprising a bot-- tom section, a pair of side sections movable to or away from each other, a bow and stern mold section hingedly secured to each side mold section, means for securing the bow and stern mold sections together, means for adjusting the bottom mold vertically, an in terior mold, and a support therefor.

4. A concrete ship mold comprising a bottom section, a pair of side sections movable to or away from each other, a bow and stern mold section hingedly secured to each side mold section, means for securing the bow and stern mold sections together, means for adjusting the bottom mold vertically, an interior mold, a support therefor, adapted to be carried by the exterior side mold sec tions, and means for raising and lowering the interior mold vertically with relation to the support.

5. A concrete ship mold comprising a pair of exterior side mold sections, a support for each section, power operated means for moving said supports and mold sections carried thereby to or away from each other, a stern and a bow mold section carried by each side mold, independent supports for said bow and stern mold sections, means for securing the stern and bow mold sections together, a sectional bottom mold, means for raising and lowering said sections vertically, an interior mold supporting frame, a support therefor, interior side molds carried by said frame, and a deck mold also supported by said frame.

6. A concrete ship mold comprising an ex terior bottom mold consisting of a central section and a pair of exterior sections, power operated screw jacks adapted to raise and lower said bottom mold sections vertically in unison, track ways arranged on each side of the bottom molds, trucks movable to and from each other mounted upon said track ways, frames carried by said trucks, exterior side mold sections secured to said frames, power operated screw jacks for moving the trucks, the molds and the supporting frames, a bow and stern mold section hingedly secured to each side mold, means for securing said bow and mold sections together, an in terior mold, and a support therefor.

7. A concrete ship mold comprising an exterior bottom mold consisting of a central section and a pair of exterior sections, power operated screw jacks adapted to raise and lower said bottom mold s ctions vertically in unison, track ways arranged on each side of the bottom molds, trucks movable to and from each other mounted upon said track ways, frames carried by said trucks, exterior side mold sections secured to said frames, power operated screw jacks for moving the trucks, the molds and the supporting frames, a bow and stern mold section hingedly secured to each side mold, means for securing said bow and mold sections together, a plurality of transverse truss frames adapted to be supported by the side mold frames, an interior mold frame supported by the transverse truss frames and vertically adjustable thereon, side molds carried by said frame and deck molds also supported by said frame. I

8. A concrete ship mold comprising a pair of longitudinally extending piers adapted to sewe as launching ways for the ship,plates slidably mounted on side ways, adapted to serve as bottom mold sections for the ship, a plurality of bottom mold sections arranged between and exterior of said plates, means for raising and lowering said bottom mold sections, a pair of exterior side mold sections laterally adjustable with relation to the bottom molds, a bow and stern mold section hingedly secured to each side mold section, an interior mold, and a support for the same.

9. A concrete ship mold comprising a pa r of longitudinally extending piers adapted to serve as launching ways for the ship, plates slidably mounted on side ways, adapted to serve as bottom mold sections for the ship, a plurality of bottom mold sections Copies of this patent may be obtained for Washington, D. o

arranged between and exterior of said plates, means for raising and lowering said bottom mold sections, a pair of exterior side mold sections laterally adjustable with relation to the bottom molds, a bow and stern mold section hingedly secured to each side mold section, an interior mold, a support for the same, a stationary frame work forming a housing for the molds, and power operated means carried by said frame work for moving the side molds to and away from each other.

10. In a concrete ship mold of the character described, the combination with the movable exterior side mold sections, of a bow and stern mold section for each side mold, and a bottom mold vertically adjustable with relation to the side mold sections.

11. In a concrete ship mold of the character described, the combination with the movable exterior side mold sections, of a bow and stern mold section for each side mold, a bottom mold vertically adjustable with relation to the side mold sections, an interior frame, and interior side and deck mold tions supported by said frame.

12. In a concrete ship mold, a main frame, a bottom mold vertically adjustable in said frame, a pair of side molds movable to and away from each other in said frame, a bow and stern mold section. carried by each side mold, an interior mold, a vertically adjustable frame supporting the interior mold, and power operated means carried by the main frame for transmitting power to adjust the position of the bottom and side molds.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

SECONDO GILETTI. Witnesses:

JOHN H. HERRING, W. W. HnALnY.

five cents each, by addressing the Commissioner of Patents, 

